The Structure Of A Conical Horn Can Be Divided Into Three Parts:

1. The vibration system includes diaphragm, voice coil, centering support, dust cover, etc
2. The magnetic circuit system includes magnetic upper plate, magnetic column, magnetic lower plate, magnet, etc
3. The auxiliary system includes a basin frame, edge pressing, wiring frame, and phase plug.
According to Faraday's law, when a current carrying conductor passes through a magnetic field, it is subjected to an electric force, which follows the Fleming left-hand rule. The force is perpendicular to the direction of the current and magnetic field, and the magnitude of the force is proportional to the current, wire length, and magnetic flux density. When the voice coil inputs alternating audio current, it is subjected to an alternating driving force to generate alternating motion, which drives the paper bowl to vibrate and repeatedly pushes the air to produce sound.
Magnetic horn: also known as "tongue spring horn", an electromagnet with a movable iron core between the two poles of a permanent magnet. When there is no current in the coil of the electromagnet, the movable iron core is attracted by the magnetic attraction of the two poles of the permanent magnet and remains stationary in the center; When there is current flowing through the coil, the movable iron core is magnetized and becomes a bar magnet. As the direction of the current changes, the polarity of the bar magnet also changes accordingly, causing the movable iron core to rotate around the fulcrum. The vibration of the movable iron core is transmitted from the cantilever to the diaphragm (paper bowl) to drive the thermal vibration of the air.